Add debug logging for product price retrieval in FalukantService and RevenueSection

- Introduced console logs in FalukantService to trace the parameters used in the getProductPricesInCities method, enhancing visibility into the product price retrieval process.
- Added logging in RevenueSection to capture the loading process and received better prices for products, improving traceability and debugging capabilities during price loading operations.

frontend/src/components/falukant/RevenueSection.vue

@@ -99,11 +99,13 @@
         }
       },
       async loadPricesForAllProducts() {
+        console.log(`[RevenueSection] loadPricesForAllProducts called, products: ${this.products.length}, currentRegionId: ${this.currentRegionId}`);
         for (const product of this.products) {
           if (this.loadingPrices.has(product.id)) continue;
           this.loadingPrices.add(product.id);
           try {
             const currentPrice = parseFloat(this.calculateProductRevenue(product).absolute);
+            console.log(`[RevenueSection] Loading prices for product ${product.id} (${product.labelTr}), currentPrice: ${currentPrice}, currentRegionId: ${this.currentRegionId}`);
             const { data } = await apiClient.get('/api/falukant/products/prices-in-cities', {
               params: {
                 productId: product.id,
@@ -111,6 +113,7 @@
                 currentRegionId: this.currentRegionId
               }
             });
+            console.log(`[RevenueSection] Received better prices for product ${product.id}:`, data);
             this.$set(product, 'betterPrices', data || []);
           } catch (error) {
             console.error(`Error loading prices for product ${product.id}:`, error);